/Engine/Source/Runtime/Engine/Classes/Components/SkinnedMeshComponent.h
Get Parent Bone of the input bone
the name of the parent bone for the specified bone. Returns 'None' if the bone does not exist or it is the root bone
[FName](API\Runtime\Core\UObject\FName) GetParentBone ( [FName](API\Runtime\Core\UObject\FName) BoneName ) const